14129821 has 2 divisors, whose sum is σ = 14129822. Its totient is φ = 14129820.

The previous prime is 14129803. The next prime is 14129879. The reversal of 14129821 is 12892141.

14129821 is nontrivially palindromic in base 15.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10169721 + 3960100 = 3189^2 + 1990^2 .

It is a cyclic number.

It is not a de Polignac number, because 14129821 - 2⁷ = 14129693 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 14129821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14129321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7064910 + 7064911.

It is an arithmetic number, because the mean of its divisors is an integer number (7064911).

Almost surely, 2^14129821 is an apocalyptic number.

It is an amenable number.

14129821 is a deficient number, since it is larger than the sum of its proper divisors (1).

14129821 is an equidigital number, since it uses as much as digits as its factorization.

14129821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 28.

The square root of 14129821 is about 3758.9654161750. The cubic root of 14129821 is about 241.7569047605.

The spelling of 14129821 in words is "fourteen million, one hundred twenty-nine thousand, eight hundred twenty-one".